My game has 3 BitmapFont (later more) on screen. I Want to be able to touch the font and output it's string in the console so I know which one is pressed. I tried to create a rectangle but I was unable to get the string of the touched BitmapFont.
Here is my code to create BitmapFont:
public class simple implements ApplicationListener {
private OrthographicCamera camera;
private SpriteBatch batch;
BitmapFont font;
GlyphLayout layout;
String a1 = "aa";
String a2 = "bb";
String a3 = "cc";
int a = 0;
#Override
public void create() {
camera = new OrthographicCamera();
camera.setToOrtho(false, 800, 480);
batch = new SpriteBatch();
layout = new GlyphLayout();
font = new BitmapFont(Gdx.files.internal("arial-15.fnt"));
}
#Override
public void render() {
Gdx.gl.glClearColor(0, 0, 0.2f, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
camera.update();
batch.setProjectionMatrix(camera.combined);
batch.begin();
for (int i =1; i< 4;i++){
layout.setText(font, "a"+i);
font.draw(batch, layout,200+(15*i),200 );
}
batch.end();
}
You want to have combined functionality of String, BitmapFont, Layout and positioning. The best way is to create a class for this clickable font that contains all that we need. I did some work for you since I am a nice guy and I actually have plenty of other things to do :D.
public class ClickableFont {
//Declare the fields
private GlyphLayout layout;
private BitmapFont font;
private String text;
private int posX;
private int posY;
/**
* Constructs clickable text from a font
* #param text Text to display
* #param posX X position of the text
* #param posY Y position of the text
*/
public ClickableFont(String text, int posX, int posY) {
this.text = text;
this.posX = posX;
this.posY = posY;
font = new BitmapFont(Gdx.files.internal("arial-15.fnt"));
layout = new GlyphLayout(font, text);
}
/**
* #param batch Draws the text using the given SpriteBatch.
* #param camera Requires a camera to calculate touches between screen and world.
*/
public void update(SpriteBatch batch, OrthographicCamera camera)
{
checkClicked(camera);
font.draw(batch, layout, posX, posY);
}
/**
* Checks if this object is clicked and outputs to console
* #param camera the camera
*/
private void checkClicked(OrthographicCamera camera)
{
if (Gdx.input.justTouched())
{
//Get screen coordinates
Vector3 touch = new Vector3(Gdx.input.getX(), Gdx.input.getY(), 0);
//Transform screen touch to world coordinates using the camera you are drawing with
camera.unproject(touch);
//System.out.println(getRectangle());
//System.out.println(touch);
if (getRectangle().contains(touch.x, touch.y))
{
System.out.println(text + " has been clicked.");
}
}
}
/**
* Creates a rectangle for the sprite to perform collision calculations.
* Since it seems font.draw draws from top to bottom (coordinate system of LibGDX is not consistent)
* We have to adept the rectangle position Y position
* #return rectangle of font bounds
*/
private Rectangle getRectangle()
{
return new Rectangle(posX, posY - (int)layout.height, (int)layout.width, (int)layout.height);
}
}
As you can see it tackles your problem in steps. Tackling problems is all you are doing in programming. A rule of thumb is to never make a method more then 10 lines, excluding comments. Exceptions can be made but any large method can be broken down into much more readable smaller methods.
Now how to use this ClickableFont class?
public class simple implements ApplicationListener {
private OrthographicCamera camera;
private SpriteBatch batch;
//folowing are not nececary anymore since it's handled by the new class
//BitmapFont font;
//GlyphLayout layout;
//String a1 = "aa";
//String a2 = "bb";
//String a3 = "cc";
int a = 0;
//Declare a list to hold your clickable fonts
List<ClickableFont> clickableFonts = new ArrayList<ClickableFont>();
#Override
public void create() {
camera = new OrthographicCamera();
camera.setToOrtho(false, 800, 480);
batch = new SpriteBatch();
//Add clickable fonts to the list
clickableFonts.add(new ClickableFont("aa", 200, 200));
clickableFonts.add(new ClickableFont("bb", 200 + 150, 200));
clickableFonts.add(new ClickableFont("cc", 200 + 150 * 2, 200));
}
#Override
public void render() {
Gdx.gl.glClearColor(0, 0, 0.2f, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
camera.update();
batch.setProjectionMatrix(camera.combined);
batch.begin();
/* replace your loop
for (int i =1; i< 4;i++){
layout.setText(font, "a"+i);
font.draw(batch, layout,200+(15*i),200 );
}*/
for (ClickableFont font : clickableFonts)
{
font.update(batch, camera);
}
batch.end();
}
Related
My sprite moves too slowly. Basically I want to apply less force to move my player. Current this:
getBody().applyForceToCenter(new Vector2(-10000000f,0f), true);
is the force needed to make it move a tiny bit.
I know the reason why I am not able to move it is since I haven't scaled the sprite (64x64) it weights more than 400kg. What should be the correct scale?
This is my game screen.
public class GameScreen implements Screen {
//Reference to our Game, used to set Screens
private Logang game;
//basic playscreen variables
private OrthographicCamera gamecam;
private Viewport gamePort;
//Box2d variables
private World world;
private Box2DDebugRenderer b2dr;
boolean drawn = true;
private Player p;
private int pX = 100, pY = 300;
public GameScreen(Logang game) {
this.game = game;
//create cam used to follow mario through cam world
gamecam = new OrthographicCamera();
gamePort = new ScalingViewport(Scaling.stretch, Logang.GWIDTH, Logang.GHEIGHT, gamecam);
gamePort.apply();
gamecam.position.set(gamecam.viewportWidth / 2, gamecam.viewportHeight / 2, 0);
gamecam.update();
Box2D.init();
//create our Box2D world, setting no gravity in X, -10 gravity in Y, and allow bodies to sleep
world = new World(new Vector2(0, Logang.GRAVITY), true);
//allows for debug lines of our box2d world.
b2dr = new Box2DDebugRenderer();
//create a FitViewport to maintain virtual aspect ratio despite screen size
p = new Player(new Sprite(new Texture("hud_p3.png")), world, pX, pY, 1);
//initially set our gamcam to be centered correctly at the start of of map
line();
}
#Override
public void show() {
}
public void update(float dt) {
//handle user input first
p.update(dt);
//update our gamecam with correct coordinates after changes
}
#Override
public void render(float delta) {
//separate our update logic from render
update(delta);
//Clear the game screen with Black
Gdx.gl.glClearColor(0, 0, 0, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
world.step(1f / 60f, 6, 2);
gamecam.position.set(p.getSprite().getX(),Logang.GHEIGHT / 2, 0); // x and y could be changed by Keyboard input for example
gamecam.update();
game.getBatch().setProjectionMatrix(gamecam.combined);
//renderer our Box2DDebugLines
b2dr.render(world, gamecam.combined);
System.out.println("Player x: " + p.getSprite().getX() + " Camera X: " + gamecam.position.x + " Body X: " + p.getBody().getPosition().x);
//System.out.println("Player y: " + p.getSprite().getY() + " Camera Y: " + gamecam.position.y + " Body Y: " + p.getBody().getPosition().y);
game.getBatch().begin();
if (p.getBody() != null)
p.render(game.getBatch());
EntityManager.renderTerra(game.getBatch(), delta);
game.getBatch().end();
}
public void line() {
Texture tmp = new Texture("hud_p3.png");
tmp.setWrap(Texture.TextureWrap.MirroredRepeat, Texture.TextureWrap.MirroredRepeat);
for (int i = 0; i < 50; i++) {
EntityManager.add(new Ground(new Sprite(tmp), world, (int)(i * Logang.TILE), 1, 2));
}
// EntityManager.changeSize(((Logang.TILE) * 5),Logang.TILE);
}
#Override
public void resize(int width, int height) {
//updated our game viewport
gamePort.update(width, height);
gamecam.position.set(gamecam.viewportWidth / 2, gamecam.viewportHeight / 2, 0);
}
public World getWorld() {
return world;
}
#Override
public void pause() {
}
#Override
public void resume() {
}
#Override
public void hide() {
}
#Override
public void dispose() {
world.dispose();
b2dr.dispose();
}
And this is my entity class
private World world;
private Sprite sprite;
private Body body;
private int tipo;
public Entity(Sprite sprite, World world, int x, int y, int tipo) {
this.sprite = sprite;
this.world = world;
getSprite().setPosition(x, y);
sprite.setSize(Logang.TILE, Logang.TILE);
sprite.setOriginCenter();
define(tipo);
this.tipo = tipo;
}
public void update(float dt){
if(Gdx.input.isKeyPressed(Input.Keys.LEFT)){
getBody().applyForceToCenter(new Vector2(-10000000f,0f), true);
}
if(Gdx.input.isKeyPressed(Input.Keys.RIGHT)){
getBody().applyForceToCenter(new Vector2(10000000f,0f), true);
}
if(Gdx.input.isKeyPressed(Input.Keys.SPACE)){
//getBody().applyLinearImpulse(0f,-Logang.GRAVITY,
getBody().getPosition().x, getBody().getPosition().y, true);
}
}
public void define(int tipo) {
BodyDef bdef = new BodyDef();
bdef.position.set((getSprite().getX() + getSprite().getWidth() / 2),
(getSprite().getY() + getSprite().getHeight() / 2));
switch (tipo) {
case 1: {
bdef.type = BodyDef.BodyType.DynamicBody;
break;
}
case 2: {
bdef.type = BodyDef.BodyType.StaticBody;
break;
}
case 3: {
bdef.type = BodyDef.BodyType.DynamicBody;
break;
}
}
body = world.createBody(bdef);
FixtureDef fdef = new FixtureDef();
fdef.density=0.001f; // (weight: range 0.01 to 1 is good)
PolygonShape shape = new PolygonShape();
shape.setAsBox(getSprite().getWidth() / 2, getSprite().getHeight() / 2);
fdef.shape = shape;
body.createFixture(fdef);
body.setUserData(this);
shape.dispose();
}
public void render(SpriteBatch batch) {
if (tipo != 2) {
float posX = getBody().getPosition().x;
float posY = getBody().getPosition().y;
getSprite().setPosition(posX - getSprite().getWidth() / 2, posY -
getSprite().getHeight() / 2);
}
getSprite().draw(batch);
}
public Sprite getSprite() {
return sprite;
}
public void setSprite(Sprite sprite) {
this.sprite = sprite;
}
public Body getBody() {
return body;
}
public void setBody(Body body) {
this.body = body;
}
And this are the in game variables
public static final int GWIDTH = 800;
public static final int GHEIGHT = (GWIDTH/16)*9;
public static final float PPM = 100f;
public static final float GRAVITY = -10f;
public static final float TILE = 64;
Could you please give me a fix?
I already tried to divide body and gamecam position still no effect
What should be the correct scale?
The right scale would be the scale in real life where 1 unit in LibGDX (Box2D) represents 1 meter in real life. I always advice people to use this scale and zoom the camera properly.
Mind though, if you are using very large objects and zoom the camera all the way back objects appear to be falling slowly. This is obviously because your camera contains a much larger space. Not only would it fall slowly but it won't interact properly with the world if the item is supposed to be smaller.
Adept the camera to your world, not your world to your camera.
More detailed answer I gave
Im trying to do a little game in LibGdx, right now i have a spaceship that can move with a touchpad in every directions and the camera follows it.
Im tryng to accomplish a parallax background made of stars that moves depending of where the spaceship is going.
Here it is the code, Im giving you all the class just to be sure to not mess up, for im new with this programming code.
public class TouchPadTest extends OrthographicCamera implements ApplicationListener {
public static final int WIDTH=480;
public static final int HEIGHT=800;
private OrthographicCamera camera;
private Stage stage;
private SpriteBatch batch;
private Touchpad touchpad;
private TouchpadStyle touchpadStyle;
private Skin touchpadSkin;
private Drawable touchBackground;
private Drawable touchKnob;
private Texture blockTexture;
private Sprite blockSprite;
private float blockSpeed;
public void create() {
batch = new SpriteBatch();
//Create camera
float aspectRatio = (float) Gdx.graphics.getWidth() / (float) Gdx.graphics.getHeight();
camera = new OrthographicCamera();
camera.setToOrtho(false, TouchPadTest.WIDTH, TouchPadTest.HEIGHT);
//Create a touchpad skin
touchpadSkin = new Skin();
//Set background image
touchpadSkin.add("touchBackground", new Texture("data/touchBackground.png"));
//Set knob image
touchpadSkin.add("touchKnob", new Texture("data/touchKnob.png"));
//Create TouchPad Style
touchpadStyle = new TouchpadStyle();
//Create Drawable's from TouchPad skin
touchBackground = touchpadSkin.getDrawable("touchBackground");
touchKnob = touchpadSkin.getDrawable("touchKnob");
//Apply the Drawables to the TouchPad Style
touchpadStyle.background = touchBackground;
touchpadStyle.knob = touchKnob;
//Create new TouchPad with the created style
touchpad = new Touchpad(10, touchpadStyle);
//setBounds(x,y,width,height)
touchpad.setBounds(15, 15, 200, 200);
//Create a Stage and add TouchPad
stage = new Stage(new FitViewport(Gdx.graphics.getWidth(),Gdx.graphics.getHeight()));
stage.addActor(touchpad);
Gdx.input.setInputProcessor(stage);
//Create block sprite
blockTexture = new Texture(Gdx.files.internal("data/shuttle2.png"));
blockSprite = new Sprite(blockTexture);
//Set position to centre of the screen
blockSprite.setPosition(Gdx.graphics.getWidth()/2-blockSprite.getWidth()/2, Gdx.graphics.getHeight()/2-blockSprite.getHeight()/2);
blockSpeed=5;
}
public void movePlayer(){
Vector2 v = new Vector2(touchpad.getKnobPercentX(), touchpad.getKnobPercentY());
float angle = v.angle();
if (touchpad.isTouched()){
blockSprite.setRotation(angle);
}
blockSprite.setX(blockSprite.getX() + touchpad.getKnobPercentX()*blockSpeed);
blockSprite.setY(blockSprite.getY() + touchpad.getKnobPercentY()*blockSpeed);
//Draw
camera.position.set(blockSprite.getX() + blockSprite.getWidth() / 2, blockSprite.getY() + blockSprite.getHeight() / 2, 0);
camera.update();
batch.setProjectionMatrix(camera.combined);
}
public void renderBackground() {
//---------------PARALLAX BACKGROUND---------------------//
}
public void dispose() {
}
public void render() {
Gdx.gl.glClearColor(0/255f,5/255f,15/255f,1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
//Move blockSprite with TouchPad
movePlayer();
batch.begin();
renderBackground();
blockSprite.draw(batch);
batch.end();
stage.act(Gdx.graphics.getDeltaTime());
stage.draw();
}
#Override
public void pause() {
}
#Override
public void resume() {
}
#Override
public void resize(int width, int height) {
}
}
For a better exemple, this is the kind of result that i want to achieve: https://www.youtube.com/watch?v=zA91SaOR-Io, if you can help me it will be amazing. Thank You.
This working example of a 3 layer parallax background was adapted from the LibGdx Parallax test and should give you an idea on how to implement a parallax effect. The three images used are all 1024x1024px.
import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.InputProcessor;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.math.Matrix4;
import com.badlogic.gdx.math.Vector3;
public class Test extends ApplicationAdapter implements InputProcessor{
private SpriteBatch batch;
private ParallaxCamera camera;
private Texture bgClose;
private Texture bgMid;
private Texture bgFar;
final Vector3 curr = new Vector3();
final Vector3 last = new Vector3(-1, -1, -1);
final Vector3 delta = new Vector3();
#Override
public void create () {
bgClose = new Texture(Gdx.files.internal("starbg-close.png"));
bgMid = new Texture(Gdx.files.internal("starbg-mid.png"));
bgFar = new Texture(Gdx.files.internal("starbg-far.png"));
camera = new ParallaxCamera(1920,1080);
batch = new SpriteBatch();
Gdx.input.setInputProcessor(this);
}
#Override
public void render () {
//clear screen
Gdx.gl.glClearColor(0f, 0f, 0f, 1f);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
// background layer, no parallax, centered around origin
batch.setProjectionMatrix(camera.calculateParallaxMatrix(0, 0));
batch.disableBlending();
batch.begin();
batch.draw(bgFar, -(int)(bgFar.getWidth() / 2), -(int)(bgFar.getHeight() / 2));
batch.end();
batch.enableBlending();
batch.setProjectionMatrix(camera.calculateParallaxMatrix(0.25f, 0.25f));
batch.begin();
for (int i = 0; i < 9; i++) {
batch.draw(bgMid, i * bgClose.getWidth() - 512, -512);
}
batch.end();
batch.setProjectionMatrix(camera.calculateParallaxMatrix(.5f, .5f));
batch.begin();
for (int i = 0; i < 9; i++) {
batch.draw(bgClose, i * bgClose.getWidth() - 512, -512);
}
batch.end();
}
//.. omitted empty methods ..//
#Override
public boolean touchUp(int screenX, int screenY, int pointer, int button) {
last.set(-1, -1, -1);
return false;
}
#Override
public boolean touchDragged(int x, int y, int pointer) {
camera.unproject(curr.set(x, y, 0));
if (!(last.x == -1 && last.y == -1 && last.z == -1)) {
camera.unproject(delta.set(last.x, last.y, 0));
delta.sub(curr);
camera.position.add(delta.x, delta.y, 0);
}
last.set(x, y, 0);
return false;
}
private class ParallaxCamera extends OrthographicCamera {
Matrix4 parallaxView = new Matrix4();
Matrix4 parallaxCombined = new Matrix4();
Vector3 tmp = new Vector3();
Vector3 tmp2 = new Vector3();
public ParallaxCamera (float viewportWidth, float viewportHeight) {
super(viewportWidth, viewportHeight);
}
public Matrix4 calculateParallaxMatrix (float parallaxX, float parallaxY) {
update();
tmp.set(position);
tmp.x *= parallaxX;
tmp.y *= parallaxY;
parallaxView.setToLookAt(tmp, tmp2.set(tmp).add(direction), up);
parallaxCombined.set(projection);
Matrix4.mul(parallaxCombined.val, parallaxView.val);
return parallaxCombined;
}
}
}
Because of my design, i want to get rid of NinePatch object, but i use it to initialize textures at the desired size using framebuffer, and then apply that textures to my custom objects
Im new to LibGDX and GL stuff.
The problem is when i draw FBO texture to screen the image is so small, idk why
I grab skeleton of all this from here: https://stackoverflow.com/a/7632680/401529
My RenderToTexture class is:
public class RenderToTexture {
private float fbScaler = 1f;
private boolean fbEnabled = true;
private FrameBuffer fb = null;
private TextureRegion fbReg = null;
[... more constructors ... ]
/**
*
* #param scale
*/
public RenderToTexture(int width, int height, float scale, boolean hasDepth) {
if(width == -1){
width = (int) (Gdx.graphics.getDisplayMode().width * scale);
}
if(height == -1){
height = (int) (Gdx.graphics.getDisplayMode().height * scale);
}
fb = new FrameBuffer(
Pixmap.Format.RGBA8888,
(int)(width * fbScaler),
(int)(height * fbScaler),
hasDepth
);
fbReg = new TextureRegion(fb.getColorBufferTexture());
fbReg.flip(false,false);
}
public void begin(){
if(fbEnabled) {
fb.begin();
Gdx.gl.glClearColor(0, 0,0,0);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
}
}
public TextureRegion end(){
if(fb != null)
{
fb.end();
return fbReg;
// batch.draw(fboRegion, 0, 0);
}
return null;
}
}
And my util class:
public class ImageUtils {
public static TextureRegion ninePatchToTextureRegion(NinePatch patch, int width, int height){
return ninePatchToTextureRegion(new NinePatchDrawable(patch), width, height);
}
public static TextureRegion ninePatchToTextureRegion(NinePatchDrawable patch, int width, int height){
RenderToTexture r2t = new RenderToTexture(width, height, 1, false);
SpriteBatch sb = new SpriteBatch();
r2t.begin();
sb.begin();
patch.draw(sb, 0, 0, width, height);
sb.end();
sb.dispose();
return r2t.end();
}
}
Then i call this util class when i create a sprite:
NinePatchDrawable ninepatchtest = new NinePatchDrawable(
new NinePatch(new Texture(Gdx.files.internal("img/ui/btn-retro-blue.png")), 5, 5, 5, 5)
);
TextureRegion result = ImageUtils.ninePatchToTextureRegion(ninepatchtest, 200, 100);
sprite = new Sprite(result);
The current result is (left) and the size simulated desired result (right)
EDIT: Camera size is displaymode size, glued to screen, no zoom, no movement.
EDIT: Fixed missing dispose suggested by #Tenfour04
If this way is not the best way to do it, im open to new alternatives
Well i found a "HALF" solution of my problem:
As i see here in this example LibGDX - Drawing to a FrameBuffer does not work i miss the setProjectionMatrix to SpriteBatch object, so render to texture class begin() method now is:
public SpriteBatch begin(){
SpriteBatch batch = null;
if(fbEnabled) {
fb.begin();
Gdx.gl.glClearColor(0, 0,0,0);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
Matrix4 m = new Matrix4();
m.setToOrtho2D(0, 0, fb.getWidth(), fb.getHeight());
batch = new SpriteBatch();
batch.setProjectionMatrix(m);
}
return batch;
}
Now renderToTexture begin() returns spritebatch, so:
public static TextureRegion ninePatchToTextureRegion(NinePatchDrawable patch, int width, int height){
RenderToTexture r2t = new RenderToTexture(width, height, 1, false);
SpriteBatch sb = r2t.begin();
sb.begin();
patch.draw(sb, 0, 0, width, height);
sb.end();
sb.dispose();
return r2t.end();
}
This solves the size of drawed texture from FBO, but ninepatch is drawed ok outside framebuffer, and stretched with framebuffer...
Hy guys,
I am developing a game for android using libgdx. I am completely stuck at the part of detecting collision between two bodies.
I have a player which I create through the function below
public Body createPlayer(String file_path, String fixture_name) {
// 0. Create a loader for the file saved from the editor.
BodyEditorLoader loader = new BodyEditorLoader(Gdx.files.internal(file_path));
// 1. Create a BodyDef, as usual.
BodyDef bd = new BodyDef();
bd.type = BodyDef.BodyType.DynamicBody;
// 2. Create a FixtureDef, as usual.
FixtureDef fd = new FixtureDef();
fd.density = 1;
fd.friction = 0.5f;
fd.restitution = 0.3f;
// 3. Create a Body, as usual.
body= world.createBody(bd);
//body.setBullet(true);
// 4. Create the body fixture automatically by using the loader.
loader.attachFixture(body, fixture_name, fd, 1);
body.setUserData(this);
return body;
}
and an enemy that I create with the same function of the player where I change only the file_path and the fixture_name.
The file_path points to a .json file that I created with box2d editor (site: http://www.aurelienribon.com/blog/projects/physics-body-editor/).
After the creation of the body I draw the player and the enemy with two similar functions ( I only post one):
private void drawPlayer(){
player_sprite = new Sprite(player_TR);
player_sprite.setSize(player.getWidth(), player.getHeight());
player_sprite.setPosition(player.getX(), player.getY());
player_sprite.setOrigin(0, 0);
player_sprite.draw(sb);
}
If I start the game everything is drawn where it should be. Obviously if the player touches the enemy nothing happen.
So i started trying to search how to make the two bodies collides but I don't really understand how to use ContactListener and beginContact.
beginContact wants as input a Contact but what is a Contact?
I have found this code online which appears to solve my problem but I don't know how to use it:
worldbox.setContactListener(new ContactListener() {
#Override
public void beginContact(Contact contact) {
if(contact.getFixtureA().getBody().getUserData()== "body1" &&
contact.getFixtureB().getBody().getUserData()== "body2")
Colliding = true;
System.out.println("Contact detected");
}
Can you help me (if it is possible through some code) to solve my problem?
Thanks in advance,
Francesco
Update of my question
Here is my render method:
public class GameRenderer{
private GameWorld myWorld;
private ShapeRenderer shapeRenderer;
private SpriteBatch sb;
private Camera camera;
private Constants constant;
private Rectangle viewport;
//dichiaro le variabili per caricare gli asset
private Player player;
private ScrollHandler scroller;
private Bordo frontBordoSX_1, backBordoSX_1, frontBordoSX_2, backBordoSX_2;
private Bordo frontBordoDX_1, backBordoDX_1, frontBordoDX_2, backBordoDX_2;
/*
private Ostacolo ob1_sx, ob2_sx, ob3_sx;
private Ostacolo ob4_dx, ob5_dx, ob6_dx;
*/
private TextureRegion player_TR;
private TextureRegion bordoSX_1, bordoSX_2;
private TextureRegion bordoDX_1, bordoDX_2;
private TextureRegion obstacleSX, obstacleSX_flip;
private TextureRegion obstacleDX, obstacleDX_flip;
private TextureRegion enemyS;
private TextureRegion blackBar;
//box2dpart
private World worldbox;
private Sprite fbDx_1,fbDx_2,fbSx_1,fbSx_2;
private Sprite player_sprite;
private Body player_body, bordo_destro;
private MyContactListener contactListener;
public GameRenderer(GameWorld world) {
myWorld = world;
constant = new Constants();
camera = new OrthographicCamera(constant.getWidth(), constant.getHeight());
shapeRenderer = new ShapeRenderer();
shapeRenderer.setProjectionMatrix(camera.combined);
sb = new SpriteBatch();
sb.setProjectionMatrix(camera.combined);
contactListener = new MyContactListener();
worldbox= new World(new Vector2(0,-10),true);
worldbox.setContactListener(contactListener);
//initialize objects and assets
initGameObjects();
initAssets();
}
private void initGameObjects(){
player = myWorld.getPlayer();
scroller = myWorld.getScroller();
frontBordoSX_1 = scroller.getFrontBordoSX_1();
backBordoSX_1 = scroller.getBackBordoSX_1();
frontBordoSX_2 = scroller.getFrontBordoSX_2();
backBordoSX_2 = scroller.getBackBordoSX_2();
frontBordoDX_1 = scroller.getFrontBordoDX_1();
backBordoDX_1 = scroller.getBackBordoDX_1();
frontBordoDX_2 = scroller.getFrontBordoDX_2();
backBordoDX_2 = scroller.getBackBordoDX_2();
/* other objects
ob1_sx = scroller.getOb1_sx();
ob2_sx = scroller.getOb2_sx();
ob3_sx = scroller.getOb3_sx();
ob4_dx = scroller.getOb4_dx();
ob5_dx = scroller.getOb5_dx();
ob6_dx = scroller.getOb6_dx();
*/
}
private void initAssets(){
player_TR = AssetLoader.player;
bordoSX_1 = AssetLoader.bordoSX;
bordoSX_2 = AssetLoader.bordoSX;
bordoDX_1 = AssetLoader.bordoDX;
bordoDX_2 = AssetLoader.bordoDX;
obstacleDX = AssetLoader.obstacleDX;
obstacleSX = AssetLoader.obstacleSX;
obstacleDX_flip = AssetLoader.obstacleDX_flip;
obstacleSX_flip = AssetLoader.obstacleSX_flip;
enemyS = AssetLoader.enemyS;
blackBar = AssetLoader.blackBar;
//box2d part
}
private void drawMargin(){
//bordo SX
/*
sb.draw(bordoSX_1, frontBordoSX_2.getX(), frontBordoSX_2.getY(), frontBordoSX_2.getWidth(),
frontBordoSX_2.getHeight());
sb.draw(bordoSX_2, frontBordoSX_1.getX(), frontBordoSX_1.getY(), frontBordoSX_1.getWidth(),
frontBordoSX_1.getHeight());
*/
fbSx_1 = new Sprite(bordoSX_1);
fbSx_1.setSize(frontBordoSX_1.getWidth(),frontBordoSX_1.getHeight());
fbSx_1.setPosition(frontBordoSX_1.getX(), frontBordoSX_1.getY());
fbSx_1.setOrigin(0, 0);
fbSx_1.draw(sb);
fbSx_2 = new Sprite(bordoSX_2);
fbSx_2.setSize(frontBordoSX_2.getWidth(),frontBordoSX_2.getHeight());
fbSx_2.setPosition(frontBordoSX_2.getX(), frontBordoSX_2.getY());
fbSx_2.setOrigin(0, 0);
fbSx_2.draw(sb);
fbDx_1 = new Sprite(bordoDX_1);
fbDx_1.setSize(frontBordoDX_1.getWidth(),frontBordoDX_1.getHeight());
fbDx_1.setPosition(frontBordoDX_1.getX(), frontBordoDX_1.getY());
fbDx_1.setOrigin(0, 0);
fbDx_1.draw(sb);
fbDx_2 = new Sprite(bordoDX_2);
fbDx_2.setSize(frontBordoDX_2.getWidth(),frontBordoDX_2.getHeight());
fbDx_2.setPosition(frontBordoDX_2.getX(), frontBordoDX_2.getY());
fbDx_2.setOrigin(0, 0);
fbDx_2.draw(sb);
sb.draw(blackBar,-constant.getWidth()/2,-constant.getHeight()/2,
(float) (0.573913)*(constant.getWidth()/6),constant.getHeight());
sb.draw(blackBar,(float)(constant.getWidth()/2-(0.573913)*(constant.getWidth()/6)),-constant.getHeight()/2,
(float)(0.573913)*(constant.getWidth()/6),constant.getHeight());
}
private void drawPlayer(){
player_sprite = new Sprite(player_TR);
player_sprite.setSize(player.getWidth(), player.getHeight());
player_sprite.setPosition(player.getX(), player.getY());
player_sprite.setOrigin(0, 0);
player_sprite.draw(sb);
}
/*
private void drawOstacoli(){
sb.draw(obstacleSX_flip,ob1_sx.getX(),ob1_sx.getY(),ob1_sx.getWidth(),ob1_sx.getHeight());
sb.draw(obstacleSX,ob2_sx.getX(),ob2_sx.getY(),ob2_sx.getWidth(),ob2_sx.getHeight());
sb.draw(obstacleSX_flip,ob3_sx.getX(),ob3_sx.getY(),ob3_sx.getWidth(),ob3_sx.getHeight());
sb.draw(obstacleDX,ob4_dx.getX()+constant.getWidth()/2-ob4_dx.getWidth(),ob4_dx.getY(),ob4_dx.getWidth(),ob4_dx.getHeight());
sb.draw(obstacleDX_flip,ob5_dx.getX()+constant.getWidth()/2-ob5_dx.getWidth(),ob5_dx.getY(),ob5_dx.getWidth(),ob5_dx.getHeight());
sb.draw(obstacleDX,ob6_dx.getX()+constant.getWidth()/2-ob6_dx.getWidth(),ob6_dx.getY(),ob6_dx.getWidth(),ob6_dx.getHeight());
}
*/
public void render(float runTime) {
Box2D.init();
int width = constant.getWidth();
int height = constant.getHeight();
float ratio = constant.getRatio();
//viewport
float aspectRatio = (float) width / (float) height;
float scale = 1f;
Vector2 crop = new Vector2(0f, 0f);
if(aspectRatio > ratio)
{
scale = (float)height/(float)height;
crop.x = (width - width * scale) / 2f;
} else if (aspectRatio < ratio) {
scale = (float)width/(float)width;
crop.y = (height - height*scale)/2f;
}
else
{
scale = (float) width / (float) width;
}
float w = (float) width * scale;
float h = (float) height * scale;
viewport = new Rectangle(crop.x, crop.y, w, h);
// update camera
camera.update();
// clear previous frame
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
shapeRenderer.begin(ShapeRenderer.ShapeType.Filled);
// Draw Background color
shapeRenderer.setColor(255 / 255.0f, 255 / 255.0f, 250 / 255.0f, 1);
shapeRenderer.rect(-constant.getWidth() / 2, -constant.getHeight() / 2, constant.getWidth(),
constant.getHeight());
// End ShapeRenderer
shapeRenderer.end();
// set viewport
Gdx.gl.glViewport((int) viewport.x, (int) viewport.y,
(int) viewport.width, (int) viewport.height);
// Begin SpriteBatch
sb.begin();
// The player needs transparency, so we enable that again.
sb.enableBlending();
// Draw player at its coordinates.
drawPlayer();
//draw right and left side
drawMargin();
// End SpriteBatch
sb.end();
worldbox.step(1 / 60f, 6, 2);
}
}
And if I start the program my view is my player in the middle and to margins ,one on the left and one on the right. (unfortunatly I cannot post images of my view because I don't have enough rep).
Everithing is fine. I move my player with the accelerometer and it works fine without any problem. The only problem is that if I move the player near the margin the two entities overlap instead of colliding and I don't understand why.
I also fixed the line:
loader.attachFixture(body, fixture_name, fd, 1);
to
loader.attachFixture(body, fixture_name, fd, player_width);
but nothing changes.
First, from here, the object Contact manages contact between two shapes, and from here, the listener ContactListener will be called when two fixtures begin to touch.
So, to make your code work, you should set a custom object to your bodies with the method: setUserData(Object userData). Usually this method is used to link the sprite or the actor with the physic body, but for example purpose you could just send a simple ID (like a string).
So in this part:
// 3. Create a Body, as usual.
body= world.createBody(bd);
//body.setBullet(true);
You could add an identificator to your object like this:
body.setUserData("player");
to idenfity your object, and then, when the listener get fired, you could retrieve this value:
#Override
public void beginContact(Contact contact) {
String userDataA = contact.getFixtureA().getBody().getUserData().toString();
String userDataB = contact.getFixtureB().getBody().getUserData().toString();
if(userDataA.equals("player") && userDataB.equals("otherEntity")){
colliding = true;
//do stuffs when collision has started
} else if(userDataB.equals("player") && userDataA.equals("otherEntity")){
colliding = true;
//do stuffs when collision has started
}
System.out.println("Contact detected");
}
After that, you could be able to do whatever you want to do with this collision.
Hope you find this useful!
Player Class
public class Player extends Sprite implements InputProcessor {
public Vector2 velocity = new Vector2();
private float speed = 500;
public Rectangle rectangle;
public Player(Sprite sprite){
super(sprite);
this.rectangle = sprite.getBoundingRectangle();
}
public void draw(SpriteBatch spriteBatch){
update(Gdx.graphics.getDeltaTime());
super.draw(spriteBatch);
}
public void update(float delta) {
rectangle = new Rectangle(getX() + velocity.x * delta,0,rectangle.getWidth(),rectangle.getWidth());
setX(getX() + velocity.x * delta);
}
}
PlayScreen Class
public class PlayScreen implements Screen {
private Player player;
private OrthographicCamera camera;
private OrthogonalTiledMapRenderer renderer;
private TiledMap map;
private Rectangle rightRectangle, leftRectangle, playerRectangle;
//private ShapeRenderer shapeRenderer;
#Override
public void render(float delta) {
Gdx.gl.glClearColor(0, 0, 0, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
renderer.render();
renderer.getSpriteBatch().begin();
player.draw(renderer.getSpriteBatch());
renderer.getSpriteBatch().end();
//shapeRenderer.begin(ShapeType.Filled);
//shapeRenderer.setColor(0, 1, 0, 1);
//shapeRenderer.rect(
// player.getX() + player.velocity.x * delta, 0,
// player.rectangle.getWidth(), player.rectangle.getHeight());
//shapeRenderer.end();
}
#Override
public void resize(int width, int height) {
camera.viewportWidth = width;
camera.viewportHeight = height;
camera.update();
}
#Override
public void show() {
camera = new OrthographicCamera();
map = new TiledMap();
renderer = new OrthogonalTiledMapRenderer(map);
//shapeRenderer = new ShapeRenderer();
player = new Player(new Sprite(new Texture("img/player.png")));
rightRectangle = new Rectangle(1280,0,0,720);
leftRectangle = new Rectangle(0,0,0,720);
boolean wallLeft = leftRectangle.overlaps(player.rectangle);
boolean wallRight = rightRectangle.overlaps(player.rectangle);
if(wallLeft){
System.out.println("wallLeft Overlap");
player.velocity.x = 0;
}
else if(wallRight){
System.out.println("wallRight Overlap");
player.velocity.x = 0;
}
player.setPosition(
Gdx.graphics.getWidth()/2f - player.getWidth()/2f,
Gdx.graphics.getHeight()/2f - player.getHeight()/2f
- Gdx.graphics.getHeight()/5f);
}
}
Doesn't seem to be colliding correctly. The rightRectangle and leftRectangle are my screen side bounds. When I use the shapeRenderer, it produces the ShapeRendered rectangle and it will follow my player around. However, I believe that my player.rectangle is not moving at all for some reason, resulting in it not colliding with my side bounds. Any help would be greatly appreciated!
rightRectangle = new Rectangle(1280,0,0,720);
leftRectangle = new Rectangle(0,0,0,720);
A Rectangle is defined as Rectangle(x, y, width, height). It looks like you are trying to define it incorrectly as Rectangle(x1, y1, x2, y2). In the above, you have created two rectangles of 0 width.